| My Blue Rose LTD T/A Witley Village Stores | Witley | A rating |
| My Booking Rewards Limited | London | A rating |
| My Build Estimate Ltd | Northampton | A rating |
| MY BUSINESS FLIGHT LTD | ILFORD | A rating |
| MY CAB LTD | Crewe | A rating |
| My Care (Grampian) Limited | Aberdeen | A rating |
| My Care My Home Limited | Pontypool | A rating |
| My cave Ltd | eltham | A rating |
| My Choice Courier Services Ltd | Coventry | A rating |
| MY Choice Healthcare Seven Limited | Coventry | A rating |
| MY CITY DEVELOPER LTD | Birmingham | A rating |
| MY COLLEGE LIMITED | London | A rating |
| My Crew Healthcare Limited | Prestatyn | A rating |
| MY CUTPRICE LTD | Nottingham | A rating |
| My Data Technologies Limited | Hounslow | A rating |
| My Delhi Streetery Limited | Newcastle Upon Tyne | A rating |
| My Deli Fresh Ltd | Bradford | A rating |
| My Digital Accounts Limited | Cheadle Hulme | A rating |
| MY DIGITAL COLLEGE LTD (Trading as Purlos) | London | A rating |
| My Digital Hero Consulting LTD | Harrogate | A rating |
| My E-Pharmacare Limited trading as Dixons Green Pharmacy | Dudley | A rating |
| My Emissions Ltd | London | A rating |
| MY EMW LTD t/a East Meets West Take Away | STALYBRIDGE | A rating |
| MY FABULOSA LTD | CHESHIRE | A rating |
| My Father's House Assemblies Of God Church | Telford | A rating |
| My Finance Club Limited | Sheffield | A rating |
| My Fishmongers Limited | London | A rating |
| My Fone World LTD | Nuneaton | A rating |
| My Foods LTD | Halifax | A rating |
| My Gelato Ltd | Audley | A rating |
| My Glass Projects Group LTD | London | A rating |
| My Globe Ltd | Bristol | A rating |
| My Grab n Go LTD | Blackburn | A rating |
| MY HALAL BUTCHERS LIMITED | Cardiff | A rating |
| MY HEALTH & WELLBEING CLINICS LTD | LONDON | A rating |
| My Healthy Family Ltd | London | A rating |
| MY HOME CHOICE (ESSEX) LIMITED | Colchester | A rating |
| My Home Move Ltd | Leicester | A rating |
| My Home Store Limited | Glasgow | A rating |
| My Homecare Bexley & Greenwich | Dartford | A rating |
| My Hope Trading Limited | Caerphilly | A rating |
| My Horizon Care Ltd | Leeds | A rating |
| My India Ltd TA Mother India | Leicester | A rating |
| My Indian | Manchester | A rating |
| My Karak Chai | Oldham | A rating |
| My Lalaland Ltd | London | A rating |
| My Learning Hub Limited | Twickenham | A rating |
| My Legal Cashier Ltd | London | A rating |
| MY LIVEN LIMITED | LONDON | A rating |
| My Local Accounting LTD | Leicester | A rating |
| My Local Bobby Ltd | Waltham Abbey | A rating |
| My Local Laundry Limited | Leicester | A rating |
| My Local Pitch Ltd | London | A rating |
| MY LONDON PLUMBERS LTD | London | A rating |
| MY LUXURY BATHROOMS LIMITED | London | A rating |
| My Marquee Ltd | Halesowen | A rating |
| My Merchant Services Limited | Hayes | A rating |
| My Natural Clinic Limited | London | A rating |
| MY OLD PLACE UK LIMITED T/A MY OLD PLACE | LONDON | A rating |
| My Online Store Ltd | Glasgow | A rating |
| My Packaging | Leeds | A rating |
| My Peace Mills Limited | Sherwood | A rating |
| My Personal Therapeutics | London | A rating |
| MY PESP | Eastbourne | A rating |
| My Pets Vets Leigh Limited | Leigh | A rating |
| My Phone Ltd | Bradford | A rating |
| My Pillar Limited | WALLSALL | A rating |
| My Pizza (Liverpool) Ltd T/A Pizza Zone | Liverpool | A rating |
| MY PREMIER STORE LIMITED T/A PREMIER EXPRESS | ROTHERHAM | A rating |
| My Prestige Accountant Ltd | Stanmore | A rating |
| My Private Villas Ltd | London | A rating |
| MY PROJECT INTERVIEW LIMITED | Salford | A rating |
| MY PURE GELATO LTD | Leeds | A rating |
| My Remedy Kitchen Ltd | London | A rating |
| My Ride Company Limited | Southampton | A rating |
| MY RIDE TAXI APP LTD | Evesham | A rating |
| MY ROOF LTD | Dunstable | A rating |
| My Seth Group Ltd | London | A rating |
| MY SHOPFITTINGS LIMITED | London | A rating |
| My Skin Ethics Ltd | LONDON | A rating |
| MY SMART GROUP LTD | Manchester | A rating |
| My store 1 Limited T/A Pepe's Piri Piri | Dudley | A rating |
| MY STORE MANCHESTER LTD | Manchester | A rating |
| My Sub Limited T/A Subway | Stafford | A rating |
| My Support & Care Services (West Country) Ltd | WELLS | A rating |
| My Supported Life LLP | Gloucester | A rating |
| MY TECH WORLD LTD | Cheshire | A rating |
| MY THAI NORTHERN QUARTER LTD | Manchester | A rating |
| MY TOOL HIRE LIMITED | HARROW | A rating |
| My Tribe Homes Ltd | Chislehurst | A rating |
| My Uniform Limited | Burton Upon Trent | A rating |
| My Versatile Healthcare LTD | Newcastle Upon Tyne | A rating |
| My Village Cafe Bar Limited | London | A rating |
| MY VILLAGE LTD t/a My Village Organic. | London | A rating |
| My Vision Ltd T/A Kokoro Liverpool | Liverpool | A rating |
| MY WAY LONDON LTD | Canary Wharf | A rating |
| My Way Support CIC | Okehampton | A rating |
| My World Estates | West Bromwich | A rating |
| My-Accounting & Business Advisors Ltd | Birmingham | A rating |
| My-architect Studio LLP | London | A rating |
| My1Login Limited | Glasgow | A rating |
| MYA LTD | SLOUGH | A rating |
| MYAC PVT LTD | BRACKNELL | A rating |
| MyAhmed Ltd | London | A rating |
| Myan Limited | Brechin | A rating |
| Myanmar Survey Research Co Ltd | London | A rating |
| MyArtBroker (London) Limited | Slough | A rating |
| MYB BUILDERS LTD | Birmingham | A rating |
| MyBuilder Limited | London | A rating |
| MYC Group(UK) Limited | London | A rating |
| MyCab Telford Ltd | Shifnal | A rating |
| MYCAKERY LIMITED (T/A BANKER2BAKER.LDN) | Bexleyheath | A rating |
| MYCARDIUM AI LIMITED | Liverpool | A rating |
| Mycare Homes Ltd | Southampton | A rating |
| Mycare Services LTD T/A Caremark (Mid Sussex and Crawley) | Haywards Heath | A rating |
| Mycareadmin Ltd | Iver | A rating |
| Mycash Limited | London | A rating |
| Mycelium Network Ltd | Sheffield | A rating |
| MyChips Limited | Uttoxeter | A rating |
| mycitydeal Limited t/a Groupon | London | A rating |
| Mycom (UK) Ltd | London | A rating |
| MYCOMEUP LTD | LONDON | A rating |
| MYCONUTRI LIMITED | CHELTENHAM | A rating |
| Mycoplasma Experience LTD | Redhill | A rating |
| Mycorrhizal Systems Ltd | Isle of Bute | A rating |
| MyCrown Restaurant Limited T/A Swad | London | A rating |
| MyData-T Ltd | Uxbridge | A rating |
| Myddelton College | Denbigh | A rating |
| Myddelton Foods Ltd t/a Street Greek | London | A rating |
| MYDEEDS LTD | LONDON | A rating |
| mydentist Group Limited | Kearsley | A rating |
| mydentist Group Limited | Manchester | A rating |
| MyDevConnect Ltd | Belfast | A rating |
| MyEdSpace Ltd | London | A rating |
| MyelinZ LTD | MANCHESTER | A rating |
| Myemarket Ltd T/A My eMarket | Perivale | A rating |
| Myenergi Ltd | Grimsby | A rating |
| Myers Consulting Limited | Harrow | A rating |
| Myers Fletcher & Gordon | London | A rating |
| myfm ltd | London | A rating |
| MYFONE (UK) LIMITED | Southall | A rating |
| MYFOOD365 LTD | Oxford | A rating |
| MYFRESHCO LIMITED | Coventry | A rating |
| MYG Investments Ltd | Chorley | A rating |
| MYHA Ltd. | Barking | A rating |
| MyHealth Private Limited | Birmingham | A rating |
| Myhealthcare Clinic Ltd | London | A rating |
| MYI Limited | London | A rating |
| MYIC UK Ltd | Hemel Hempstead | A rating |
| Myjam Marketplace LTD | London | A rating |
| MyJoVE Europe, Inc | London | A rating |
| MYK LTD | London | A rating |
| Myka Ltd T/A Bushmead News & Post Office | Luton | A rating |
| MyKeyPeople Ltd | Andover | A rating |
| Mykonos Restaurant | Poole | A rating |
| Mylahore Birmingham Limited | Birmingham | A rating |
| MyLahore Bradford Limited | Bradford | A rating |
| Mylan Pharma UK Limited | Sandwich | A rating |
| MYLEE'S LTD | Manchester | A rating |
| Mylocum Ltd | Ilford | A rating |
| MyMakan Restaurant | Norwich | A rating |
| MYMART LTD | HESTON | A rating |
| MYMEDS HEALTHCARE LTD | London | A rating |
| MyMil Limited | Loughborough | A rating |
| MyMiniFactory Ltd | London | A rating |
| Mynas Care LTD | Nelson | A rating |
| Mynest Builders Ltd | London | A rating |
| MyNestBox Limited | Bristol | A rating |
| MYNR Ltd t/a Green Lane Post Office | Croydon | A rating |
| Mynt Ltd | London | A rating |
| Mynurva Limited | Canterbury | A rating |
| Mynydd Cleaning and Maintenance Limited | Criccieth | A rating |
| MYOMASTER LIMITED | East Molesey | A rating |
| MyOptique Group Limited | London | A rating |
| MYP (BRADFORD) LIMITED | Bradford | A rating |
| MYP MANCHESTER LIMITED | Bradford | A rating |
| MyPath Ltd trading as The Progress Project | Worthing | A rating |
| MYPINPAD Ltd | Cardiff | A rating |
| MYPOS PAYMENTS LTD | London | A rating |
| myPOS World Ltd | London | A rating |
| MYPRINTEXPRESS LTD | Hornchurch | A rating |
| Myriad (T) Limited | Colchester | A rating |
| Myriad Developments Limited | Market Harborough | A rating |
| Myricx Pharma Limited | London | A rating |
| Myrtle Care Providers Limited | Cheshunt | A rating |
| Myrtle Healthcare Ltd | Bournemouth | A rating |
| Myrtle Learning Ltd | Rochester | A rating |
| Myrtle Restaurant Ltd | Bradford | A rating |
| Myrtle Software Limited | Cambridge | A rating |
| MYRTLE SOFTWARE SOLUTIONS LIMITED | London | A rating |
| Mysa Care and Support Limited | Farnborough | A rating |
| MYSCOOP LABS LTD | Birmingham | A rating |
| MYSCOTS LTD | Glasgow | A rating |
| MYSENSE LTD | London | A rating |
| MYSHOP6 LTD | BIRMINGHAM | A rating |
| Mysing Care Limited | Wakefield | A rating |
| MYSS SUNDERLAND LIMITED | Houghton Le Spring | A rating |
| Myst Hotels and Resorts Limited | Brockenhurst | A rating |
| Mystery Southampton Ltd | Southampton | A rating |
| MYSTIC AI LIMITED | Bath | A rating |